re PR fortran/54997 (-Wunused-function gives false warnings)

re PR fortran/54997 (-Wunused-function gives false warnings)

2012-11-26  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/54997
	* decl.c (match_procedure_decl): Don't set 'referenced' attribute
	for PROCEDURE declarations.
	* parse.c (gfc_fixup_sibling_symbols,parse_contained): Don't set
	'referenced' attribute for all contained procedures.
	* trans-decl.c (gfc_get_symbol_decl): Allow for unreferenced procedures.
	(build_function_decl): Set TREE_USED for referenced procedures.

2012-11-26  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/54997
	* gfortran.dg/warn_unused_function_2.f90: New.

From-SVN: r193811